15277+0606 STF 1944 (HD 137761)

 
 
15h 27m 42.14s +06° 06' 04.5" P.A. 293.00 sep 0.7 mag 8.32,8.79 Sp F8 dist. 196.08 pc (639.61 l.y.)
 
 
Coord 2000 15277+0606 Discov num STF1944 Comp Coord arcsec 2000 15 27 42.14 +06 06 04.5
Date first 1832 Date last 2019 Obs 134
Pa first 342 Pa last 292.8 P.A. Now (θ) 292.8°
Sep first 1.3 Sep last 0.68 Sep. Now (ρ) 0.68"
Mag pri 8.32 Mag sec 8.79 delta mag (ΔM) 0.47 Spectral class F8 (yellow-white)
Pri motion ra -002 Sec motion ra -002
Pri motion dec -036 Sec motion dec -036
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 137761 Constellation Serpens SAO 121013 HIP 75682
Tycho2 0349-00765-1 Gaia DR2 1162496434113614848 HD 137761 GC 20777
ADS 9647 BD BD+06 3048 Distance 196.08 Distance ly 639.61
 
 
ORBITAL ELEMENTS
 
 
Period (P)1030y Periastron (T)2089.3y Semi-major axis (a)1.131a
Eccentricity (e)0.5 Inclination (i)126.6° Longitude of periastron (ω)294.8°
Node (Ω)142.6° Notes ReferenceZir2015a
Equinox2000 Last observation2010 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 302.7 0.730
2001 302.3 0.724
2002 301.8 0.717
2003 301.4 0.711
2004 300.9 0.705
2005 300.4 0.698
2006 300.0 0.692
2007 299.5 0.685
2008 299.0 0.679
2009 298.5 0.672
2010 297.9 0.666
2011 297.4 0.659
2012 296.9 0.653
2013 296.3 0.646
2014 295.8 0.640
2015 295.2 0.633
2016 294.6 0.626
2017 294.0 0.620
2018 293.4 0.613
2019 292.8 0.606
2020 292.2 0.599
2021 291.5 0.593
2022 290.9 0.586
2023 290.2 0.579
2024 289.5 0.572
2025 288.8 0.566
2026 288.0 0.559
2027 287.3 0.552
2028 286.5 0.545
2029 285.7 0.539
2030 284.9 0.532


 
 grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.


 
  


wds15277%2B0606a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic